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6 votes
Accepted

Formal completion of the normal bundle

3 votes

Is a formally smooth morphism a filtered inductive limit of smooth algebras?

4 votes

Counterexample to Openness of Flat Locus

7 votes
Accepted

Which morphisms of ring spectra are of effective descent for modules?

5 votes
Accepted

Presenting $\mathbb{Q}[[t]]$ as an explicit colimit of smooth $\mathbb{Q}$-algebras: an explicit example for the Popescu's theorem

2 votes

Artin/Popescu approximation for (some) big rings

2 votes

Henselian couples and finite etale morphisms

4 votes

Normality and fiber product

0 votes

Formal Schemes Mittag Leffler

10 votes

Does an injective group homomorphism between countable abelian groups that splits over every finitely generated subgroup, necessarily split?